4043 Aluminium Alloy Welding Wire

Alloy 4043 is one of the oldest and most widely used welding and brazing alloys. AL4043 can be classed as a general purpose type filler alloy. Due to the addition to silicon alloy 4043 results in improved fluidity (wetting action) to make alloy 4043 the preferred choice by welders. Alloy 4043 is...

Product Details

Chemical Composition Limits

Weight%

Al

Si

Fe

Cu

Ti

Zn

Mn

Mg

Others

Others

Alloy 4043

Bal

4.5-6.0

0.60 max

0.30 max

0.15 max

0.10 max

0.15 max

0.20 max

0.05 max each

0.15 max total

Alloy 4043 is one of the oldest and most widely used welding and brazing alloys. AL4043 can be classed as a general purpose type filler alloy. Due to the addition to silicon alloy 4043 results in improved fluidity (wetting action) to make alloy 4043 the preferred choice by welders. Alloy 4043 is less sensitive to weld cracking and brighter and almost smut free welds.

Melting range 573°- 625°C Density 2.68gm/cc ALLOY 4043 is an Al-5% Si alloy, non-heat treatable. ALLOY 4043 has a lower melting range than the base metals for which it is commonly used and relieves contraction during weld cooling.